Titanium alloy and method for producing the same
AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsTakashi Saito, Tadahiko Furuta, Kazuaki Nishino, Hiroyuki Takamiya
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Abstract
A titanium alloy according to the present invention is characterized in that it comprises an element of Va group (the vanadium group) in an amount of 30-60% by weight and the balance of titanium substantially, exhibits an average Young's modulus of 75 GPa or less, and exhibits a tensile elastic limit strength of 700 MPa or more. This titanium alloy can be used in a variety of products, which are required to exhibit a low Young's modulus, a high elastic deformability and a high strength, in a variety of fields.
Claims95
A titanium alloy characterized in that
- said titanium alloy comprises an element of Va group (the vanadium group) in an amount of 30-60% by weight and the balance of titanium substantially,
- exhibits an average Young's modulus of 75 GPa or less,
- exhibits a tensile elastic limit strength of 700 MPa or more, and
- the gradient of the tangential line in a stress-strain diagram obtained by a tensile test within an elastic deformation range, in which the stress ranges from 0 to the tensile elastic limit strength, decreases continuously with increase in stress.
A titanium alloy characterized in that
- said titanium alloy comprises one or more elements selected from the metallic element group consisting of zirconium (Zr), hafnium (Hf) and scandium (Sc) in a summed amount of 20% by weight or less, an element of Va group (the vanadium group) in a summed amount of 30-60% by weight together with the one or more elements of the metallic element group and the balance of titanium substantially,
- exhibits an average Young's modulus of 75 GPa or less,
- exhibits a tensile elastic limit strength of 700 MPa or more, and
- the gradient of the tangential line in a stress-strain diagram obtained by a tensile test within an elastic deformation range, in which the stress ranges from 0 to the tensile elastic limit strength, decreases continuously with increase in stress.
A titanium alloy characterized in that
- said titanium alloy is a sintered alloy comprising an element of Va group (the vanadium group) in an amount of 30-60% by weight and the balance of titanium substantially,
- exhibits an average Young's modulus of 75 GPa or less,
- exhibits a tensile elastic limit strength of 700 MPa or more, and
- the gradient of the tangential line in a stress-strain diagram obtained by a tensile test within an elastic deformation range, in which the stress ranges from 0 to the tensile elastic limit strength, decreases continuously with increase in stress.
A titanium alloy characterized in that
- said titanium alloy is a sintered alloy comprising one or more elements selected from the metallic element group consisting of zirconium (Zr), hafnium (Hf) and scandium (Sc) in a summed amount of 20% by weight or less, an element of Va group (the vanadium group) in a summed amount of 30-60% by weight together with the one or more elements of the metallic element group, and the balance of titanium substantially,
- exhibits an average Young's modulus of 75 GPa or less,
- exhibits a tensile elastic limit strength of 700 MPa or more, and
- the gradient of the tangential line in a stress-strain diagram obtained by a tensile test within an elastic deformation range, in which the stress ranges from 0 to the tensile elastic limit strength, decreases continuously with increase in stress.
Dependencies are inferred from the claim text.